Volume 37, Issue 1, June 2016, Pages 73-85
A. A. El-Barbary⃰; A. M. Sharaf; Bader E-Bader
Volume 36, Issue 3, December 2013, Pages 161-178
Afrah F. Salama; Ahmed A. El-Barbary; Ismail M. Al-Sharkawi; Yara A. Helal
Volume 29, Issue 2, December 2005, Pages 17-28
A.A. EL-BARBARY; H.H. EL-NAGGAR